# BELL 4FORTY AIR MIPS mountain bike helmet, matte dark green/orange, size S (52–56 cm)

**URL:** https://aio.lv/en/product--bell-bel-7158247--12371241
**Data updated:** 2026-04-26 20:44 (EEST)
**Category:** Protective Helmets
**Manufacturer:** BELL
**Manufacturer code:** BEL-7158247
**EAN:** 196178172585
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 151.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 125.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bell-bel-7158247--12371241

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

BELL 4FORTY AIR MIPS is a mountain bike helmet with integrated MIPS rotational protection, designed for trail and enduro riding. This model features a matte dark green shell with orange accents and fits head circumferences 52–56 cm (size S). Key features include impact-absorbing construction, ventilation channels, adjustable retention system and visor for off‑road use.

## Long description

BELL 4FORTY AIR MIPS mountain bike helmet in matte dark green with orange accents is designed for trail and enduro riders seeking a balance of protection, ventilation and fit in a size S that fits head circumferences 52–56 cm. The helmet combines an impact-absorbing shell with integrated rotational protection technology, multiple airflow channels and an adjustable retention system while preserving a compact off‑road profile and a visor suitable for trail conditions.
Advantages
The helmet provides multi-directional impact mitigation through its built-in rotational protection system and an energy-absorbing shell construction for standard impact scenarios encountered in mountain biking. Ventilation channels and internal airflow design promote cooling during sustained efforts on climbs or technical sections. An adjustable retention system and padded interior enable a secure and customizable fit for the specified head size range, and the molded visor helps shield the face from sun, branches and trail spray.
Suitable for
 Trail riding and enduro stages where both protection and ventilation are required
 All-mountain training rides and long ascents where airflow matters
 Riders with head circumference between 52 and 56 cm seeking a size S fit
 Off‑road cycling in varied light and terrain conditions
When it may not be suitable
This helmet is optimized for trail and enduro use and may not be the best choice for riders who require a full-face helmet for downhill racing or extreme gravity disciplines. It also may be oversized for riders with head circumferences below 52 cm or too small for those above 56 cm — in such cases a different size or a different helmet model should be considered.
Key specifications
 Intended use: mountain bike (trail, enduro)
 Protection: impact-absorbing shell with integrated rotational protection system
 Shell finish: matte dark green with orange accents
 Size: S, fits head circumference 52–56 cm
 Ventilation: multiple airflow channels and internal ventilation design
 Fit system: adjustable retention and padded interior
 Visor: fixed/molded visor for off‑road use
How to use
Place the helmet squarely on the head so that the front edge sits approximately two finger-widths above the eyebrows. Adjust the retention system at the rear until the helmet feels snug but not tight, and secure the chin strap so it forms a V-shape under each ear with the buckle fastened comfortably under the chin. Confirm that the helmet does not shift significantly when you shake your head and that ventilation channels are unobstructed. Replace the helmet after any significant impact or according to the manufacturer’s recommended service life.
What to consider before purchase
 Measure head circumference to confirm a 52–56 cm (size S) fit
 Evaluate whether trail/enduro protection level matches your riding discipline
 Consider helmet weight and ventilation performance relative to ride duration and climate
 Check compatibility with eyewear and any communication or camera mounts you plan to use
Usage recommendations
Use the helmet for trail and enduro riding where a balance of ventilation and rotational impact protection is needed. Store it in a cool, dry place away from direct sunlight and chemicals. Inspect straps, retention system and shell regularly and replace the helmet after a crash or if visible damage appears.

## FAQ

### How much does the BELL 4FORTY AIR MIPS mountain bike helmet S cost, and is it available for purchase?

The price is 151.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can BELL 4FORTY AIR MIPS mountain bike helmet S be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All BELL products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized BELL service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12371241/68524297_large.webp